US1445023A - Railway-car truck - Google Patents

Description

J. A. LAMNT.

' y RAILWAY CAR TRUCK..

HLED 1uLY18.1921. 2 SHEETS- SHEET s.

Feb. 13, 1923. 1,445,023.

Feb. 13, 1923. 'A 1,445,023.

l.l A.- LAIVIONT.

RAILWAY CAR TRUCK.y

FILED JULY I3. 192i- Z'SHEETS-SHEET 2.

" fo/272 dla/770722?.

Patented Feb. l, M223.

SS-GNEL T0 il-.MERECAN STEEL FUNDRES,

OF CHICAGG, LLINOIS, .A CBRTON NEW-JERSEY.

Application Vfiled July 1S, 1921. Serial No.`485,430.

ToaZZ whom t may Gomera: l Be it known that l., JOHN A. LAMONT, a citizen of the United States7 residing at Chicago, in the county of Coolr and State of lllinois, have invented certain new and useful Improvements in Railway-Car Trucks, of which the following is. a specication i l j y This invention relates `to railway car trucks and more particularly to six-wheel equalizing trucks.: y

Une object of the invention is to provide .y a simple and improved equaliaing arr-aimoment in which the number olf parts ree` duced without .sacrificing operative eiliciency.

Another Iobject is to support the loadv onl the journal boxes in a. manner to prevent said boxes `from tilting anc. to redueelwear on the box guides. n

Another object is to load. the equalizing beams in a manner to maintain them in a cent-rally balanced position or `to quickly restore them to such position it' they are moved therefrom. f

Another Objectis to provide an equalizing arrangement adapted to meet the various requirements 'for successful cou'imercial operation. l l .Y

These and otherobjects are accomplished by `nieans of the arrangement disclosed on the accompanying sheets ot' drawings, in which- Figure l is a fragmentary side elevation; parts being in section, oli a railway car truck embodying my invention;v

Figure 2 is a fragmentary top planview.

of one ofl the side frames and associated parts of the truck; l y

Figure 3 is a sectional view taken inthe plane of line 3-3 ot yFigure Al; and

Figure e is a sectional` view taken in the it will be noted that l have described my invention in connection with a six-wheel equalizing JIruclr including a side traine l0 having a central journallbox opening ll and end journal box openings 12, only one of Awhich is shown. rlhe side trame also has openings 13, only one of which is shownl intermediate the journal box openings `1l and l2 for the reception ot bolster members la which rest upfonand are supported by equahzing levers l5. The outer end of each ot said equalizing leversis pivotallylmounted on ya pin 16, the pin in .each case being supported in the side walls 32 and 83 of the :trame l0. Each ot the equalizinglevers is in the form of a gooseneck, theiintermedi'ate portion being al curved 'low portion upon which the associated bolster member is supported, the outer portion curvingupwardly and supported, as stated above, `by the pink 16, and the inner .portion curving upwardly into a verticallportio'n and ter-` minating in a longitudinally extending nose 17 which rests upon its lassociated endl 18 of an equalizing beam 19 which y.ispiVOtally mounted at its middle portion upon a pin 20. This vpin 20is supported inv a groove at, the middleV of a spring cap A2l which bridges the coiled springs 22 supported upon laterally extending brackets 23 oit the intermediate journal box 24:. The ,journalre-' guided in relatively vertical movements with respect to the side `frame by shoulders or f walls 28y and 29` 'orniedintegrally with the side trame. rThe walls 28 houseor embrace the major portion of the associatedjcoiled springs 22. ln addition to having the downwardly extending portions, 27, thespring "cap also has upwardly| extending end wall portions 80 which cooperate particularly with thel upper portions ot the shoulders or walls 29. The springrap also has upwardly extending side wall portions 3l (see Figure between which the equaljizing beam 19 is mounted, whereby the bearnis maintained against lateral displacement. rlhe spring cap 2l in turn is housed within the side walls 32 and 33 of the side frame at thel section shown'in Figure 3. In the same section it will be noted that the journal box 24C hasupstanoing side walls 34E 'and 35 which limit the lateral movement between the ournal box and the associated side frame.

By providing equalizing levers of the type shown wherein the inner portions extend vertically upwardly and the longitudinally extending noses extend through the openings 36 and 37 in the walls 29 and 30 respectively, and rest upon the ends of the equalizing beam 19, all hanger connections between the equalizing beam and equalizing levers as shown in some of my earlier patents,` 'for example, Patent No. 1,377,704, granted vMay 10, 1921, are eliminated. It will be noted also that the load is transmitted through the equalizing levers and associated parts to the brackets 23 of the journal box 24 at a point below the center line of the axle. The load thus applied has a natural tendency to hang vertically and does not require that the journal box have the same amount of guiding as when the load is applied above the journal. This lessens the tendency of the journal box to tipy one way or the other, and also reduces the wear between the journal box and its associated guides. i

1n this same connection it will be noted that the equalizing levers 15 engage the ends of the equalizing beam 19 at points below the pivot point 20 of the equalizing beam for maintaining said equalizing beam in its centrally ,balanced position. l1", for any reason, the equalizing beam 19 should swing aboutits pivot, the lowered end will have its lever arm-at that side reduced and the opposite'V end in moving upwardly will have its lever arm lengthened which creates an im'- mediate tendency to counterbalance or tor the equalizing beam to again assume its normal horizontal position.

` It will be noted further that a straight line drawn between the pivot pins 16 and 2O for all practical purposes substantially includes the bearing point 38 between the nose 17 and end 18 of the equalizing lever 19. In other words, thekpoints 16, 38 and 2O lie substantially in the same straight line. 1n this way relative movement between the bearing surfaces of the nose 17 and the associated end 18 of the equalizing beam 19 is reduced to a minimum, and` likewise the wear between said parts is reduced to a minimum.

By means of the arrangement disclosed the loads equalize even under the -m0st ad verse track conditions. For example, it the middle pair of wheels should fall below the plane ot the outer pair of wheels, such as on a switch-back, the inner ends ot the equalizing levers 15, the equalizing beam 19 and the spring cap 21 would follow the journal box in its downward movement, the side frame remaining stationary and conversely if the middle. pair ot wheels `is caused to rise the associated parts mentioned, with the exception of the side frame, would rise also, the spring cap 21 being guided in its relative vertical movement with respect to the side frame by the side frame walls or shoulders 28 and 29. 1 j

It is my intention to cover all modifications of the invention falling within the spirit and scope of the following claims.

I claim:

1. In a six-wheel truck, the combination of an intermediate journal box,V resilient means carried thereby, an equalizing beam from which loads are transmitted to said journal box through said resilient means, and equalizing levers having direct engagement with said equalizing beam for transmitting loads thereto.

2. In a six-wheel truck, the combination of an intermediate journal box, resilient means carried thereby, anv equalizing beam from which loads lare transmitted to said journal box through saidresilient means, equalizing levers having direct engagement with said equalizing beam. for transmitting loads thereto, and bolster members mounted directly on said equalizing levers,

3. 1n a six-wheel truck, the combination vet anintermediate journal box, springs associated therewith, a spring cap mounted on said springs, an equalizing beam mounted on said spring cap, and equalizi-ng levers directly engaging said equalizing beam whereby loads are transmitted through said equalizing beam, cap and springs to` said journal box.

el. In a sixwheel truck, a pivotally mounted equalizing beam associated with an intermediate journal box, an equalizing lever pivotally supported at one ot' its pointsand engaging said equalizing beam, the point of engagement between said equalizing beam and equalizing lever being in substantially a straight line drawn between pivot points of said lever and beam whereby the'rela- 110 tive movement between the engaging surfaces of said equalizing lever and beam and the wear occasioned thereby are reduced to a minimum. I

5. In a six-wheel truck, a pivotally mounted equalizing beam associated with an intermediate journal box, and equalizing levers directly Aengaging said equalizing beam at a level below the pivotal point of said beam whereby the beam has a tendency to remain in its normal horizontal position or is're` turned to such position il it is moved therefrom.

6. In a six-wheel truck, a side frame, an intermediate journal box havingy a relatively vertical movement with respectl thereto, spring means mounted on said journal box, a cap supported by said spring means, an equalizing beam pivotally supported on said cap, and. equalizing levers engaging said 13o equalizing bea-m transmitting loads through said beam, cap and spring means to said journal box, said side frame and cap having engaging portions whereby relative movements therebetween are guided.

7. In a six-wheel truck, a side frame, an intermediate journal box having relatively vertical movement with respect thereto, spring means mounted on said journal box, a cap supported by said spring means, an equalizing beam pivotally supported on said cap, and equalizing levers engaging said equalizing beam transmitting loads through said beam, cap and spring means to said journal box, saidv side fra-me and cap having engaging portions whereby relative movements therebetween are guided, the inner ends of said equalizing levers extending through openings in said guiding portions for permitting such relative movements.

8. In a six-wheel truck, a side frame having a journal box opening and a plurality of guide portions at each side thereof, a journal box mounted in said opening, resilient means mountedon said journal box, a spring cap bridging said. resilient means and being guided in its relative movement with respect to said side frame by said guide portions, an equalizing beam mounted on said cap, and equalizing levers operativelyfconnected to said equalizing beam.

l 9. In a six-wheel truck, an intermediate journall box, springs vcarried at the opposite sides thereof and supported at a point below the center line of the journal, a spring cap bridgin said springs, an equalizing beam pivota ly mounted on said cap, and

equalizing 'levers operatively connected to of July, 1921.

JOHN A. LAMONT.

this 6th kday

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